ADSP-21060LC(RevH) View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
ADSP-21060LC Datasheet PDF : 64 Pages
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ADSP-21060/ADSP-21060L/ADSP-21062/ADSP-21062L/ADSP-21060C/ADSP-21060LC
Multiprocessor Bus Request and Host Bus Request
Use these specifications for passing of bus mastership between
multiprocessing ADSP-2106xs (BRx) or a host processor, both
synchronous and asynchronous (HBR, HBG).
Table 18. Multiprocessor Bus Request and Host Bus Request
5 V and 3.3 V
Parameter
Min
Max
Unit
Timing Requirements
tHBGRCSV
tSHBRI
tHHBRI
HBG Low to RD/WR/CS Valid1
HBR Setup Before CLKIN2
HBR Hold After CLKIN2
tSHBGI
HBG Setup Before CLKIN
tHHBGI
tSBRI
HBG Hold After CLKIN High
BRx, CPA Setup Before CLKIN3
tHBRI
BRx, CPA Hold After CLKIN High
tSRPBAI
RPBA Setup Before CLKIN
tHRPBAI
RPBA Hold After CLKIN
Switching Characteristics
20 + 3DT/4
13 + DT/2
13 + DT/2
21 + 3DT/4
20 + 5DT/4
ns
ns
14 + 3DT/4
ns
ns
6 + DT/2
ns
ns
6 + DT/2
ns
ns
12 + 3DT/4
ns
tDHBGO
HBG Delay After CLKIN
7 – DT/8
ns
tHHBGO
HBG Hold After CLKIN
–2 – DT/8
ns
tDBRO
BRx Delay After CLKIN
7 – DT/8
ns
tHBRO
tDCPAO
BRx Hold After CLKIN
CPA Low Delay After CLKIN4
–2 – DT/8
ns
8 – DT/8
ns
tTRCPA
tDRDYCS
tTRDYHG
tARDYTR
CPA Disable After CLKIN
REDY (O/D) or (A/D) Low from CS and HBR Low5, 6
REDY (O/D) Disable or REDY (A/D) High from HBG6, 7
REDY (A/D) Disable from CS or HBR High6
–2 – DT/8
4.5 – DT/8
ns
8.5
ns
44 + 23DT/16
ns
10
ns
1 For first asynchronous access after HBR and CS asserted, ADDR31-0 must be a non-MMS value 1/2 tCK before RD or WR goes low or by tHBGRCSV after HBG goes low. This is
easily accomplished by driving an upper address signal high when HBG is asserted. See the “Host Processor Control of the ADSP-2106x” section in the ADSP-2106x SHARC
User’s Manual, Revision 2.1.
2 Only required for recognition in the current cycle.
3 CPA assertion must meet the setup to CLKIN; deassertion does not need to meet the setup to CLKIN.
4 For ADSP-21060LC, specification is 8.5 – DT/8 ns max.
5 For ADSP-21060L, specification is 9.5 ns max, For ADSP-21060LC, specification is 11.0 ns max, For ADSP-21062L, specification is 8.75 ns max.
6 (O/D) = open drain, (A/D) = active drive.
7 For ADSP-21060C/ADSP-21060LC, specification is 40 + 23DT/16 ns min.
Rev. H | Page 31 of 64 | March 2013
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